As OPEN.BTC and OPEN.DGD are not smartcoins and the bot currently depends on the feed price, I can't set up a bot like that at the moment. I"ll try to figure out a way to generate a reliable price, but as you can see here: https://coinmarketcap.com/assets/digixdao/#markets it greatly depends on the market etc. The biggest market with a feed price looks to be the CNY : BTS market at the moment, so I could try that.